Alkanolmonoamines as Activators for the Hot Potash Process for CO2 Capture
Alkanolmonoamines as Activators for the Hot Potash Process for CO2 Capture
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DOI：
10.14233/ajchem.2014.15687
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发表时间：
2014-02-01
影响因子：
--
通讯作者：
Sawhney, S. S.
中科院分区：
文献类型：
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作者：
Ahmad, Mamshad;Masohan, Asha;Sawhney, S. S.
本研究是基于在热钾碱工艺中使用活化剂。甘氨酸通常用作Giammarco Vetrocoke工艺中的活化剂。本文系统地研究了烷醇单胺作为替代活化剂的应用。这些链烷醇单胺仅含有一个氨基，其可以是未取代的/取代的（-NH 2、-NRH或-NR 2），因此这些化合物的酸性是由分子中存在的唯一氨基产生的酸性。其中，单乙醇胺、二乙醇胺和三乙醇胺先前在文献中被报道为活化剂。本文报道了这类烷醇单胺的实验研究，包括新的烷醇单胺结构。所提出的胺作为活化剂已经显示出非常有希望的结果。对于这些胺中的一些，已经观察到吸收速率增加632- 700%，K2 CO 3吸收能力增加493%，再生CO2增加313- 400%。在甘氨酸的情况下，该增加分别为134、214和161%。这些与二乙醇胺的组合大大提高了吸收速率。本研究旨在寻找一种不可降解、廉价、环保、高效的甘氨酸替代物作为活化剂。
The present study is based on use of activators in the hot potash process. Glycine is commonly used as an activator in the Giammarco Vetrocoke process. This paper presents a systematic study on use of alkanolmonoamines as possible alternate activators. These alkanolmonoamines contain only one amino group that may be unsubstituted/ substituted (-NH2, -NRH or -NR2) and thus the acidity of these compounds is one that arises from the only amino group that is there in the molecule. Out of these, monoethanolamine, diethanolamine and triethanolamine are previously reported as activators in the literature. This paper reports the experimental studies on such alkanolmonoamines including the new alkanolmonoamine structures also. The proposed amines as activators have shown highly promising results. A 632-700 % increase in rate of absorption, 493 % increase in capacity of absorption of K2CO3 and 313-400 % increase in the CO2 regenerated has been observed for some of these amines. In case of glycine this increase is 134, 214 and 161 %, respectively. A combination of these with diethanolamine increases the rate of absorption considerably. This study is directed towards finding a non-degradable, cheaper, environmentally friendly and more efficient alternative to glycine as activator.